◆to look high and low (for sth/sb) or to search high and low (for sth/sb)到处寻找(某物/某人);四处搜寻(某物/某人)
He was searching high and low for his wife and clearly thought he was going to find her in my flat.他在到处找他的妻子, 显然他以为会在我的公寓里找到她。
I have searched high and low for shoes that will fit me properly.我已经四处搜寻合脚的鞋了。